Playing with my 6BR I tried some slow rounds using 8208XBR and stumbled upon a stupid accurate round going 2555fps. Going to try some more later this week at 300yds and if it holds up that is going to be my new 300 yard load. This is using Norma brass and Fed 205M primers with 25.4gr of XBR shooting 107SMK at .020 off. Shooting 200 yards getting all 5 rounds touching with and ES of 9 and kicks like a 22 long rifle, crazy fun...